By mistakenly, have you placed the incorrect name on your Air Canada flight ticket so don't need to worry about it because it can be correct but you need to read the Air Canada Name Change Policy:

If the passenger avails the name change service without any cost then, he/she needs to change their name within 24 hours from the flight ticket booking.

If the 24 hours have completed from the flight ticket purchase then, the passenger must pay the 60 US dollars as a name change fee.

Minor corrections are permitted such as date of birth correction, gender & middle name correction.

If you are facing trouble reaching the customer support desk call this number (Phone number) to get help from travel experts. They are known to the airline policy and are available 24*7.+1-855-738-4459